Global Patent Index - EP 4129549 A4

EP 4129549 A4 20240403 - WELD STRUCTURE, STAINLESS STEEL WELDED STRUCTURE, STAINLESS STEEL WELDED CONTAINER AND STAINLESS STEEL

Title (en)

WELD STRUCTURE, STAINLESS STEEL WELDED STRUCTURE, STAINLESS STEEL WELDED CONTAINER AND STAINLESS STEEL

Title (de)

SCHWEISSKONSTRUKTION, SCHWEISSKONSTRUKTION AUS ROSTFREIEM STAHL, GESCHWEISSTER BEHÄLTER AUS ROSTFREIEM STAHL UND ROSTFREIER STAHL

Title (fr)

STRUCTURE DE SOUDURE, STRUCTURE SOUDÉE EN ACIER INOXYDABLE, CONTENANT SOUDÉ EN ACIER INOXYDABLE ET ACIER INOXYDABLE

Publication

EP 4129549 A4 20240403 (EN)

Application

EP 21774920 A 20210319

Priority

  • JP 2020053732 A 20200325
  • JP 2021011555 W 20210319

Abstract (en)

[origin: EP4129549A1] A weld structure includes a first stainless steel member 1 and a second stainless steel member 2. A crevice made by welding 3 is defined by welding an end 11 of the first stainless steel member 1 and a portion 12 other than an end of the second stainless steel member 2. A portion close to the end of the first stainless steel member 1 is formed as a weld metal portion 6 by performing welding heat input 23 on the portion close to the end of the first stainless steel member 1. In the crevice made by welding 3, a length L<sub>B</sub> from a boundary between the weld metal portion 6 and a raw material portion to a crevice deepest portion 4 and a crevice length Lc from the crevice deepest portion 4 to a 40 µm-width position 5 satisfy Lc < L<sub>B</sub>. A stainless steel welded structure and a stainless steel welded container have the weld structure. Or, a high-strength duplex stainless steel is used at least in a shell plate.

IPC 8 full level

B23K 9/00 (2006.01); B23K 35/30 (2006.01); C22C 38/00 (2006.01); C22C 38/58 (2006.01); C22C 38/60 (2006.01)

CPC (source: EP KR US)

B23K 9/167 (2013.01 - EP); B23K 9/23 (2013.01 - EP); B23K 35/3053 (2013.01 - EP); B23K 35/308 (2013.01 - EP KR); B23K 35/3086 (2013.01 - US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/004 (2013.01 - EP US); C22C 38/005 (2013.01 - EP US); C22C 38/008 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/22 (2013.01 - EP); C22C 38/26 (2013.01 - EP); C22C 38/28 (2013.01 - EP); C22C 38/34 (2013.01 - EP US); C22C 38/42 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C22C 38/46 (2013.01 - EP US); C22C 38/48 (2013.01 - EP US); C22C 38/50 (2013.01 - EP US); C22C 38/52 (2013.01 - EP US); C22C 38/54 (2013.01 - EP US); C22C 38/58 (2013.01 - EP KR US); C22C 38/60 (2013.01 - EP KR); B23K 2103/05 (2018.08 - EP KR US); C22C 2202/02 (2013.01 - US)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 4129549 A1 20230208; EP 4129549 A4 20240403; AU 2021242774 A1 20220915; AU 2021242774 B2 20240201; CN 115335174 A 20221111; CN 115335174 B 20231020; JP 7343691 B2 20230912; JP WO2021193479 A1 20210930; KR 20220137123 A 20221011; TW 202140812 A 20211101; TW I780636 B 20221011; US 2023126782 A1 20230427; WO 2021193479 A1 20210930

DOCDB simple family (application)

EP 21774920 A 20210319; AU 2021242774 A 20210319; CN 202180023715 A 20210319; JP 2021011555 W 20210319; JP 2022510454 A 20210319; KR 20227032117 A 20210319; TW 110110699 A 20210324; US 202117907885 A 20210319